CN202251819U - Double-row gap gear - Google Patents
Double-row gap gear Download PDFInfo
- Publication number
- CN202251819U CN202251819U CN2011203756652U CN201120375665U CN202251819U CN 202251819 U CN202251819 U CN 202251819U CN 2011203756652 U CN2011203756652 U CN 2011203756652U CN 201120375665 U CN201120375665 U CN 201120375665U CN 202251819 U CN202251819 U CN 202251819U
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- Prior art keywords
- tooth
- gear
- double
- crack
- main tooth
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- Withdrawn - After Issue
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Abstract
The utility model discloses a double-row gap gear, which comprises a primary tooth, a left auxiliary tooth and a right auxiliary tooth. The left auxiliary tooth and the right auxiliary tooth are arranged on two sides of the primary tooth. The left auxiliary tooth and the right auxiliary tooth are located through location pins, eccentric spring plates with precompression amount arranged between the left auxiliary tooth and the primary tooth and between the right auxiliary tooth and the primary tooth, gap elimination elastic parts for shafts and clamp rings for the shafts are respectively and sequentially arranged on the primary tooth on the outer side of the left auxiliary tooth and the right auxiliary tooth, and the gap elimination elastic parts for the shafts have precompression amount. The double-row gap gear is low in cost, simple in process and obvious in vibration and noise reduction effect.
Description
Technical field
The utility model relates to a kind of gear, particularly relates to a kind of double crack gear that is used for the motor car engine transmission system.
Background technique
Owing to receive the restriction of environmental regulation and the needs of market competition; Motor at a high speed, efficient and low noise direction develops; Add that the user improves constantly the requirement of engine luggine and noise level, make the vibration damping of motor and noise reduction become the important topic that concerns the automobile industry development.The source of engine luggine and noise mainly refers to the vibration of speed changer generation and the noise that power transmission system produces.The conventional engines gear train assembly is mode one to one, promptly has only a pair of gear engagement in the same way at driving gear, and gear backlash is big, can't adjust, and is not high to the whole drive system transmission efficiency, and vibration, noise are big.The technology of conventional engines driving gear engagement noise reduction mainly is divided into following several types:
1) in the Gear Processing process, changing shaving technology is gear-grinding process, improves the precision kinematic accuracy and the tooth-face roughness of gear, to reach the noise reduction purpose.But it is that centre distance sum of errors assembly error etc. influences that gear noiose also receives system's accumulated error such as cylinder body, gear chamber cover hole simultaneously.And along with the accuracy of gear improves, cost of production also can significantly increase.
2) rigidity of the crucial gear of increase, the vibration that produces when reducing gear engagement reaches the noise reduction purpose.In order to increase the rigidity of gear, must cause the volume of gear correspondingly to increase, the size of part with matching also will be adjusted, and this will receive the restriction of weight and assembly space, and the effectiveness in vibration suppression of this mode is also undesirable.
3) select manufacture of materials gear such as magnesium iron for use,, be widely used on the parts such as automobile crane, connecting rod because magnesium iron itself has certain effectiveness in vibration suppression.Be applied to make gear to magnesium iron, must make it have quite high hardness, certainly will reduce its toughness; And in the gear transmission process; Gear will bear very big alternating shock load, and it was lost efficacy soon, is not preferred version so select for use magnesium iron making high gear to carry out vibration and noise reducing.
4) on gear, add damping materials such as rubber, plastics, a kind of is that surface damp is handled, and another kind is to adopt high damping material to make auto parts and components.Through raising structural damping, inhibition resonance,, improve structure anti-vibration reducing noise performance, and the sound-insulating and heat-insulating effect, on homemade passenger vehicle, tried out at present.But its oil resistant, corrosion-resistant, working condition requirement that resistance to high temperature can't satisfy motor car engine, and manufacturing process is also complicated.
Vibration and noise that above-mentioned technology does not fundamentally solve gear transmission and produced, shortcoming such as it is too high also to exist cost, receives restraining factors many, and the noise reduction effect is not obvious can not fundamentally be eliminated noise.Therefore, solve, study development and the rapid development of this technology to Domestic Automotive Industry, its significance is self-evident.
The model utility content
The purpose of the utility model is exactly the difficult point that overcomes above-mentioned existing technology, and a kind of double crack gear is provided, and can effectively reduce motor car engine gear train assembly noise.
The purpose of the utility model realizes through following technical proposals:
A kind of double crack gear; The left secondary tooth and the right secondary tooth that comprise main tooth and be installed in main tooth both sides; Left and right secondary tooth is through locating stud and main tooth location; Be equipped with eccentric latch plate between left and right secondary tooth and the main tooth with pre compressed magnitude, on the main tooth in the left and right secondary tooth outside respectively successively installation shaft use collar with the crack elastic component that disappears with axle, and spool pre compressed magnitude is arranged with the crack elastic component that disappears.The eccentric latch plate has rational pre compressed magnitude, leans on the effect of elastic force to make gear matched not have the gap engagement during work, has reduced noise.Double crack gear has been eliminated two gear backlash with main tooth pairing transmission simultaneously, and axle adopts the ripple spring with the crack elastic component that disappears simultaneously, has eliminated the axial clearance on the secondary tooth.
Further, said eccentric latch plate is a notched annulus, the inside and outside center of circle decentraction of annulus.The eccentric latch plate can be eliminated the gap that constantly changes in the gear engagement process effectively, guarantees the coupling between latch plate moment of torsion and the subtended angle.
Further, it is a spring ring that said axle uses the crack elastic component that disappears, and the bi-side of this spring ring are corrugated surface.
Further, said axle uses the bi-side of collar to be the plane.
Axle can effectively be eliminated the axial clearance between left and right secondary tooth and the main tooth with disappear crack elastic component and axle with collar, avoids producing new noise source.
Further, said locating stud adopts alloyed steel to process.35, No. 45 steel of general employing, because in use, locating stud needs stressed repeatedly, so require alignment pin should have wear resistance preferably, therefore, we can select better material GCr15 or T10A for use.
Further, the root chamfering radius of said main tooth is 0.5-1mm, avoids stress to concentrate, and guarantees that main tooth has enough bearing strengths.
The beneficial effect of the utility model is: cheap for manufacturing cost, technology is simple, and vibration damping, noise reduction are obvious.
Description of drawings
Fig. 1 is the decomposition texture schematic representation of the utility model;
Fig. 2 is the composite structure schematic representation of the utility model;
Test point chose schematic representation when Fig. 3 was noise test;
Fig. 4 is a motor head noise comparison diagram;
Fig. 5 is a motor rear end noise comparison diagram.
Embodiment
As depicted in figs. 1 and 2; A kind of double crack gear; The left secondary tooth 3 and right secondary tooth 2 that comprise main tooth 1 and be installed in main tooth 1 both sides, left and right secondary tooth 3,2 is equipped with the eccentric latch plate 5 with pre compressed magnitude through locating stud 4 and main tooth 1 location between left and right secondary tooth 3,2 and the main tooth 1; On the main tooth 1 in left and right secondary tooth 3,2 outsides respectively successively installation shaft with disappear crack elastic component 7 and axle with collar 6, and spool pre compressed magnitude is arranged with the crack elastic component 7 that disappears.
Said eccentric latch plate 5 is a notched annulus, the inside and outside center of circle decentraction of annulus.Eccentric latch plate 5 can be eliminated the gap that constantly changes in the gear engagement process effectively, guarantees the coupling between latch plate moment of torsion and the subtended angle.
It is a spring ring that said axle uses the crack elastic component 7 that disappears, and the bi-side of this spring ring are corrugated surface.Said axle uses the bi-side of collar 6 to be the plane.Axle can effectively be eliminated the axial clearance between left and right secondary tooth 3,2 and the main tooth 1 with disappear crack elastic component 7 and axle with collar 6, avoids producing new noise source.
Said locating stud 4 adopts alloyed steel to process.35, No. 45 steel of general employing, because in use, locating stud 4 needs stressed repeatedly, so require locating stud 4 to have wear resistance and intensity preferably, therefore, we can select better material GCr15 or T10A for use.
The root chamfering radius of said main tooth 1 is 0.5-1mm, avoids stress to concentrate, and guarantees that main tooth 1 has enough bearing strengths.
As shown in Figure 3, in order further to verify the noise reduction of the utility model, adopt 9 methods of engineering to carry out the noise test, the different situations of noise when adopting existing clearance elimination gear, helical gear, double crack gear respectively on the comparison engine.
Test oil: 0# diesel oil 15W/40 machine oil
The control of process of the test temperature:
Fuel oil temperature (38 ± 3) ℃
In cold back intake temperature rated power point (49 ± 2) ℃, other point is not controlled
Water-exit temperature (88 ± 5) ℃
The motor connecting means:
1) motor is installed in the semianechoic room, and the motor output terminal is connected with power measurer through the major axis of carbon fibre material, and power measurer is installed in outside the anechoic room.
2) the wall surface on every side of anechoic room attaches sound-absorbing material, and Background noise is less than 30dB (A) in the anechoic room.
3) process of the test air filter cleaner is contained in outside the anechoic room, receives the engine supercharger suction port with flexible pipe.
4) in the process of the test, engine exhaust is guided to outdoorly with steel pipe through underground, and fixes a silencer, and steel tube surface is wrapped up sound insulation with asbestos.
5) anechoic room noise circumstance correction value K meet the requirements (being K=0).
Adopt existing gear, the engine noise test data is following:
Adopt helical gear, the engine noise test data is following:
Adopt double crack gear, the engine noise test data is following:
Show that like Fig. 4 and shown in Figure 5 and above-mentioned test data the double crack gear that motor uses the utility model is than the noise that uses the minimizing motor that existing gear and helical gear can be bigger.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. double crack gear; It is characterized in that: the left secondary tooth and the right secondary tooth that comprise main tooth and be installed in main tooth both sides; Left and right secondary tooth is through locating stud and main tooth location; Be equipped with eccentric latch plate between left and right secondary tooth and the main tooth with pre compressed magnitude, on the main tooth in the left and right secondary tooth outside respectively successively installation shaft use collar with the crack elastic component that disappears with axle, and spool pre compressed magnitude is arranged with the crack elastic component that disappears.
2. double crack according to claim 1 gear is characterized in that: said eccentric latch plate is a notched annulus, the inside and outside center of circle decentraction of annulus.
3. double crack according to claim 1 gear is characterized in that: it is a spring ring that said axle uses the crack elastic component that disappears, and the bi-side of this spring ring are corrugated surface.
4. double crack according to claim 1 gear is characterized in that: said axle uses the bi-side of collar to be the plane.
5. double crack according to claim 1 gear is characterized in that: said locating stud adopts alloyed steel to process.
6. double crack according to claim 1 gear is characterized in that: the root chamfering radius of said main tooth is 0.5-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203756652U CN202251819U (en) | 2011-09-28 | 2011-09-28 | Double-row gap gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203756652U CN202251819U (en) | 2011-09-28 | 2011-09-28 | Double-row gap gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251819U true CN202251819U (en) | 2012-05-30 |
Family
ID=46113063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203756652U Withdrawn - After Issue CN202251819U (en) | 2011-09-28 | 2011-09-28 | Double-row gap gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359572A (en) * | 2011-09-28 | 2012-02-22 | 四川省眉山市东升齿轮有限公司 | Gear with double rows of gaps |
| CN104847865A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Gear assembly, gear structure and engineering machinery |
-
2011
- 2011-09-28 CN CN2011203756652U patent/CN202251819U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359572A (en) * | 2011-09-28 | 2012-02-22 | 四川省眉山市东升齿轮有限公司 | Gear with double rows of gaps |
| CN104847865A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Gear assembly, gear structure and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |